Home / 12,675.40-17,490.79-7,370.57

Finding the Fourth Proportional to 12,675.40, 17,490.79 and 7,370.57

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Solution

The fourth proportional to 12,675.40, 17,490.79 and 7,370.57 is: 10,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,675.40 : 17,490.79 = 7,370.57 : x
  2. Step 2: Convert to fraction form
    12,675.40/17,490.79 = 7,370.57/x
  3. Step 3: Cross multiply
    12,675.40x = 17,490.79 × 7,370.57
  4. Step 4: Simplify right side
    12,675.40x = 128,917,092.05
  5. Step 5: Solve for x
    x = 128,917,092.05/12,675.40
  6. Step 6: Final answer
    x = 10,170.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.